Too Hot to Sleep? Cooling Down at Night with the Right Mattress and Tips
May 16, 2025
It's 2 AM. You’re drenched in sweat, taking off the covers and turning your pillow back and forth. You’re wide awake and frustrated. Does this sound familiar? You’re not alone. Overheating prevents almost half of all New Zealanders from getting enough good sleep. Your body needs to cool off a little to sleep well, so overheating at night can really mess up your rest. You’ll be happy to learn that nighttime overheating can be tackled by preparing your room and sleeping on the right mattress (a cooling mattress to be precise.)
Understanding Why You Overheat at Night
A number of things can cause you to feel too hot at night, such as:
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Room Temperature and Airflow: Heat becomes trapped in rooms that are stuffy and warm. This causes complications for your body to cool down.
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Bedding Choices: Materials like heavy duvets or synthetic stuff keep heat and moisture close to your body, which makes you warmer at night.
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Mattress Type: Using a traditional foam mattress might retain your body’s heat, which makes bed time feel very warm.
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Personal Factors: When you go through hormonal changes, feel stressed, or have a medical issue such as menopause, you may develop night sweats.
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Lifestyle Factors: Having a lot to eat, eating spicy foods, or having alcohol late can all increase your body heat.
During New Zealand summers, nights tend to be warm and have a lot of moisture. Without proper ventilation or air conditioning in your house, these problems may get worse.
Easy and Quick Tips for Creating a Cooler Sleep Environment
You can easily make your bedroom cooler by making a few changes, like:
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Temperature Control: Try to keep your bedroom at a temperature of about 18°C. Having a fan or opening the window can make your room much airier.
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Choose Breathable Bedding: Pick bedding made out of cotton or linen for better breathability. Pick duvets or blankets that are not heavy and use moisture-wicking sleepwear for better cooling.
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Cooling Pillows: You could use a cooling gel pillow, for instance Heka’s Gel Pillow. It helps keep your head and neck cool and assists with great sleep by supporting your neck.
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Avoid Heat-Raising Habits: Avoid eating heavy or spicy foods, drinking caffeine, or having alcohol late in the day as they make it harder to stay cool at night.
If things don’t get better after these steps, your mattress could be stopping you from sleeping cool.

Mattress Materials: Friend or Foe?
A mattress can greatly affect how cool you feel when you're trying to sleep. Here’s how the type of mattress you have can affect the temperature you experience at night:
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Memory Foam Mattresses: The dense structure of memory foam tends to keep you hot.
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Innerspring and Hybrid Mattresses: The coil systems in these mattresses improve airflow, so you stay cooler as heat is properly dissipated.
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Natural Latex and Fibers: Latex, wool, silk, and cotton tend to be breathable materials, keep you dry by wicking away moisture, and maintain a steady body temperature while you sleep.
The mattresses Heka makes have cutting-edge technology to keep you cool at night. By using silk, camel hair, and alpaca wool in the layers, your mattress is able to manage both body heat and moisture, helping your bed stay cool and dry throughout the night. Heka’s Evolon® mite-resistant fabric makes the mattresses more breathable, helps limit allergens, and supports good heat dissipation.
Heka’s AI Mattress is the Smarter Solution
The thing that sets the Heka AI Mattress apart is its smart adaptive technology. The mattress moves between firmness settings to match your needs, making it easier for your body to rest and move less in your sleep. Having less movement can keep you from overheating and help you sleep more comfortably.
On top of everything else, Heka mattresses include technology that helps control your sleeping temperature. You don’t need to worry about waking up in a pool of sweat because these beds make sure your sleeping temperature stays right for you all night.
The Multiple Benefits of Cooler Sleep
Cooler temperatures at night lead to much better quality of sleep and improved health. Getting enough sleep in a cooler room deepens your sleep, boosts your mind and body recovery, and boosts daily alertness.
When you buy a cooling mattress, you are also taking care of your health and how you feel every day. A few beds with advanced technology have cooling features that use water or blow air. While they work, these often cost a lot and are not easy to keep maintained. On the other hand, Heka gives you a seamless and thoughtful design that pairs breathable materials with automated controls.
Extra Steps for Enhanced Coolness
To make your cool sleeping setup even better, you can try:
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Blackout Curtains: If you keep sunlight from coming in during the day, your room will be cooler at night.
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Regular Hydration: Drink enough water each day, but cut back in the evening to stop yourself from getting up several times for the bathroom.
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Cold Packs or Cool Compresses: Applying a cold pack or compress to your wrists or neck for a short time before you sleep can help keep you cooler.
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Room Dehumidifiers: It can be much cooler at night if you diminish humidity in warm, humid places.
Stay Cool, Sleep Better, Dream More
Don’t endure uncomfortable and unrestful nights any longer. Improving your environment and choosing a cooling mattress that is focused on airflow and comfort helps you get restful sleep even when it is very hot.
Even in the heat of a New Zealand summer, you can have cool, comfortable, and rejuvenating sleep every night, with Heka Sleep.
Keep your cool every night. See how Heka’s AI Mattress takes advantage of clever technology and natural fibers to control the temperature as you sleep.